Here's an alternative thought: The Canopy Tower in Panama. They pick you up at the airport, and drop you off when you're done. They take you birding every day with excellent guides. They have a lodge in tropical forest near the canal and the city and another in the foothills a few hours away (as well as a third, further away, in the Darien). Off season packages are pretty reasonably priced. Whether or not it is an option for you I can't say but they are a great option, in general, for folks who want to see a lot of birds in the tropics and not deal with logistics.